One of the first things I learned I needed during counseling was boundaries. In fact, boundaries is what finally brought me into counseling in the first place. DH (darling husband) and I were taking a marriage class offered by our church. They spent the whole evening talking about the importance of boundaries. When I got home, I was less than polite asking DH what they were. He knew. After his explanation I felt frustrated and confused that I didn't know what they were or how to use them. That is when I decided I needed professional counseling. Hardest and best decision ever.
Today, online I found a great description of boundaries.
I went to her webpage to learn a bit about her. She is a life coach and has a blog. She also archived it so you can easily get to the other posts. I recommend you checking out her pages if you like this post.